These examples show that MFEM can solve several types of equations that can include divergence, curl, gradient and Laplacian operators. Also, the given parameter \(f\)  was a function of the form \(\mathbb {R}^3\rightarrow \mathbb {R}^3\) , \(\mathbb {R}^2\rightarrow \mathbb {R}^2\)  and \(\mathbb {R}^3\rightarrow \mathbb {R}\) , which shows that MFEM can work with scalar and vectorial functions in a 2D or 3D domain. Although the shown visualizations were norms of the solution, using another visualization tool, such as [1]}, the vectors of the solution can be seen.
